align card font sizes across the conversation stream (T-344)

ClideCollapserCard and ConversationCard sat adjacent but used different
tokens for the same roles, so labels/summaries rendered 1-2px apart.
Standardise both on label = clideFontCaption (14), collapsed summary =
clideFontMeta (13): bump ConversationCard's label up from clideFontSmall,
bring the collapser's summary down from clideFontCaption. Goldens
regenerated for the affected card images.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

lib/builtin/claude/src/conversation_card.dart

@@ -246,7 +246,9 @@ class _ConversationCardState extends State<ConversationCard> {
     return Row(
       children: [
         if (widget.collapsible) _caret(tokens),
-        ClideText(widget.label, fontSize: clideFontSmall, color: widget.accent, fontFamily: clideMonoFamily),
+        // Header label size matches ClideCollapserCard (clideFontCaption) so
+        // neighbouring cards in the conversation stream align (T-344).
+        ClideText(widget.label, fontSize: clideFontCaption, color: widget.accent, fontFamily: clideMonoFamily),
         // While collapsed, show a one-line gist next to the label so the card
         // still says what it holds.
         if (_collapsed && summary != null) ...[

lib/widgets/src/clide_collapser_card.dart

@@ -117,7 +117,9 @@ class _ClideCollapserCardState extends State<ClideCollapserCard> {
           Expanded(
             child: ClideText(
               widget.collapsedSummary!,
-              fontSize: clideFontCaption,
+              // Summary one step below the label, matching ConversationCard so
+              // collapser + tool cards read consistently in the stream (T-344).
+              fontSize: clideFontMeta,
               fontFamily: clideMonoFamily,
               color: tokens.globalTextMuted,
               maxLines: 1,